슈메이커-레비 9 혜성의 목성 충돌관측

이시우,김승리,성환경,표태수,Lee, Si-Woo,Kim, Seung-Ri,Seong, Hwan-Gyeong,Pyo, Tae-Su 한국천문학회 1995 天文學論叢 Vol.10 No.1

We observed impact spots on Jupiter which were formed by the collision with fragments of Shoemaker-Levy 9 comet during the period from 17 July to 13 August, by using the SNU 61cm reflector combined with CCD camera and DBVRI filters. In order to get more clear image of impact spots, the observed data were processed by the unsharp masking method, high-pass filtering method and Richardson-Lucy algorithm after the basic processing through IRAF package. The sizes of impact spots range from 2000km to 1000km, and from this size, the original size of comet fragments before collision with Jupiter is estimated to be less than ${\sim}3km$. From the observed rotating rate of impact spots, the rotational period of Jupiter is determined as $9^h$ $56^m$ $32^s$ at the southern latitude of $47^{\circ}{\sim}49^{\circ}$.

한약과 전기침치료가 비만환자의 체성분변화에 미치는 영향

이시우,이수경,Lee, Si-Woo,Lee, Su-Kyung 대한동의생리학회 2006 동의생리병리학회지 Vol.20 No.6

This study was aimed at finding out changes in body composition of obese patients, such as body weight, body fat mass and lean body mass. The subjects of this study are 33 females and 6 males who are from obesity clinic at Gunsan medical center. We measured body composition using BIA(Bioelectrical Impedence Analysis) to compare pre-treatment with post-treatment. The measured data were analyzed by paired t-test using SPSS. Differences were considered significant at P<0.05. Body weigh, body fat mass and lean body mass were reduced each by $3.76{\pm}23.41{\;}kg,{\;}2.29{\pm}1.96kg{\;}and{\;}1.59{\pm}1.38kg$ at a significant level after 4 week-treatment.

환자용 사상체질진단 설문지의 체질별 응답차이에 관한 연구

이시우,주종천,이수경,이혜정,장은수,Lee, Si-Woo,Joo, Jong-Cheon,Lee, Su-Kyung,Lee, Hae-Jung,Jang, Eun-Su 사상체질의학회 2007 사상체질의학회지 Vol.19 No.3

1. Objectives This study aims to evaluate newly developing Sasang Constitution Diagnosis Questionnaire for accuracy and efficiency. 2. Methods Three hundred and twenty eight patients from 4 multi centers are involved in this study. Excluding 16 constitution-unidentified patients and 2 Taeyang-in patients, 310 patients' questionnaires are analyzed statistically by their constitutions. 3. Results Sixty one questions are statistically significant in whole 229 questions of Sasang Constitution Diagnosis Questionnaire. We have selected 30 questions from 61 questions by comparing total data from 4 multi centers with those of each center. Thirty questions are made up of 10 body shape questions, 10 appearance questions, 5 character questions and 5 symptom questions. 3. Conclusions There might be needs for revision of character and symptom questions. From results, we suggest to diagnose Sasang Constitution for screening by short-form questionnaire consisted of questions on body shapes and appearances.

외측연수증후군(外側延髓症候群)(wallenberg syndrome)으로 진단받은 태음인환자를 치료한 1예(例)에 대한 증예보고(症例報告)

이시우,박혜선,김경요,김형순,Lee, Si-Woo,Park, Hye-Sun,Kim, Kyung-Yo,Kim, Hyoung-Soon 사상체질의학회 2001 사상체질의학회지 Vol.13 No.2

If the proximal portion of the fourth segment of the vertebral onery is occluded before the posterior inferior cerebellar artery branch, ischemia usually affects the lateral medulla oblongata or the ipsilateral side of the cerebellum. The lateral medullary syndrome(wallenberg syndrome) resulting from occlusion in this area is common. 62 years old male who has swallowing difficulty, dizziness and diagnosed as the lateral medullary syndrome(wallenberg syndrome) is admitted in Wonkwang university oriental medical hospital Kwangju. We have diagnosed him as Taeumin and treated by east integrated therapy. We classified this as Taenmin-liyoiljung(太陰人 裏熱症) and prescribed chungsimyoinjatang(淸心蓮子湯) to the principle of cheongganjoyoil(淸肝燥熱). In the result, we had the improvement of the symptoms. This report described the process and contents about the way the patient was cured.

어레이 압저항 센서를 활용한 체질맥 임상연구

이시우,주종천,김경요,김종열,Lee, Si-Woo,Joo, Jong-Cheon,Kim, Kyung-Yo,Kim, Jong-Yeol 사상체질의학회 2006 사상체질의학회지 Vol.18 No.1

1. Objective Pulse diagnosis is generally applied to Traditional Oriental Medicine but not to Sasang Constitution diagnosis. Recently new pulse analyzer using array piezoresistive sensor and multi-channel robot arm developed. It reflects Oriental Medical Doctors' diagnostic processes, and its reproducibility test was done at Korea Institute of Oriental Medicine. We performed this study to set parameters diagnosing Sasang Constitution. 2. Methods One hundred thirty three subjects participated in this study. They are healty and approved this study. Before being tested with pulse analyzer, they had interview with Sasang Constitution Specialist to diagnose their Sasang Constitution. We established some useful parameters from parameters of pulse analyzer according to the Original Texts of Oriental Medicine and clinical experiences to analyze with clinical data of this study. 3. Results (I) There is a significant difference in pre-dicrotic notch time among all parameters of pulse analyzer in Sasang Constitution groups(P=0.047). (2) There is a significant difference in maximum pulse pressure in 33 to 48 year Sasang Constitution groups(P=0.010). (3) There is a significant difference in frequency width in 17 to 32 year Sasang Constitution groups(P=0.002). (4) There is a significant difference in CFS value in groups which OMD diagnoses; Floating & Sinking pulse(P=0.020). (5) There is a significant difference in pulse rate in groups which OMD diagnoses; Rapid & Slow pulse(P=0.000). (6) There is a significant difference in maximum pulse pressure in groups which OMD diagnoses; Deficient & Solid pulse(P=0.000). 4. Conclusions Analyzing parameters in each Sasang Constitution group, we found it shows significant difference in maximum pulse pressure and corresponding tendency in coefficient of floating & sinking pulse with theories of Sasang Consti-tutional Medicine. As we accumulate more clinical data, we will establish algorithm to diagnose Sasang Constitution using a pulse analyzer.

사상인과 혈청 렙틴 농도의 연관성에 관한 임상연구

이시우,김슬기,백영화,유종향,김윤정,이수경,Lee, Si-Woo,Kim, Sul-Gi,Baek, Yeong-Hwa,Yoo, Jong-Hyang,Kim, Yun-Jeong,Lee, Su-Kyung 사상체질의학회 2010 사상체질의학회지 Vol.22 No.1

1. Objectives: Leptin is ob-gene originated hormone that is concerned with energy metabolism, obesity and asthma which features are supposed to related with Sasangin's 4 viscera physiological theory of Sasang constitutional medicine(SCM). This study aims to investigate whether serum leptin concentration is associated with Sasangin. 2. Methods: Two Way ANOVA analysis was used on the constitution and serum leptin concentration corresponding with BMI among 1054 cases drawn from the Constitutional Information Bank, which was a database with clinically confirmed constitution cases collected from 21 oriental medical institutes in Korea starting from November 2007 to May 2009. The measurement of serum leptin concentration is implemented through radioimmunoassay by request to SCL. 3. Results: Male subjects showed notable difference(p=0.033) in the comparison between constitution and serum leptin concentration corresponding to BMI levels. Tae-eumins showed the highest serum leptin concentration levels in the normal and overweight groups, followed by Soyangin and Soeumin. As the groups changed from overweight to obese, there was an interaction phenomenon in the order of serum leptin concentration levels(p=0.040). As a result, Soeumins showed the highest serum leptin concentration levels and Tae-eumins and Soyangins followed in place. Female subjects did not show statistically notable differences in comparison between constitution and serum leptin concentration corresponding to BMI levels(p=0.239). Serum leptin concentration levels among overweight and obese groups, resulted in the order of Soeumins, Tae-eumins, and Soyangins. But in the as groups changed from overweight to normal the order resulted in Tae-eumin, Soyangin, and Soeumin(p=0.660). 4. Conclusion: Due to a number of limitations in this study, the examination of the relation between constitution and leptin, a main hormone responsible for the digestion, appetite, and energy metabolism, resulted to be uncertain. But statistically notable differences were confirmed in male Tae-eumins with the consideration of BMI. Further examination of the relation between constitution and leptin is necessary through prospective studies with the restriction of confusion variables in the future.

사상체질 임상 연구 현황에 대한 조사연구;사상체질의학회지를 중심으로

이시우,황지호,유종향,오승윤,주종천,장은수,Lee, Si-Woo,Hwang, Ji-Ho,Yu, Jong-Hyang,Oh, Seung-Yun,Joo, Jong-Cheon,Jang, Eun-Su 사상체질의학회 2008 사상체질의학회지 Vol.20 No.2

1. Objectives and Methods It has been examined 703 papers of Sasang Constitution Society published from 1989 to 2007. Among them, the study methods have been classified focused on 332 papers related to clinical research and the method of constitution diagnosis and subjects have been researched to research the reality of the clinical research of Sasang Constitutional Medicine. 2. Results 1. The rest studies are the most which can not be classified by existing study method among 332 clinical studies. 2. The study of patient control group is 17 cases and the clinical experiment is one case, so highly well-grounded studies have not been performed. 3. The most method of constitution diagnosis is the constitution diagnosis by experts and by QSCC. 4. The number of constitution diagnosis method performed in the research institution is within 2. They are 254 cases(89.5%). 5. The studies which utilize more than 3 constitution methods are 22 cases and the studies that use medical rash are 7cases(31.8) 6. The 215 cases that subjects are less than 100 are the most and 100${\sim}$500 subjects are 71 cases. 500${\sim}$10000 subjects are 33 cases and more than 1000 subjects are 15 cases. 3. Conclusions Therefore, it is needed to increase the rate of highly well-grounded studies and set the standard criteria by providing constitution diagnosis guideline.

제지애쉬를 혼입한 모르터의 특성에 관한 실험적 연구

이시우,Lee, Si-Woo 한국건축시공학회 2002 한국건축시공학회지 Vol.2 No.3

The purpose of this study is investigating characteristics of paper-ash mortar according to partial replacement of fine aggregate by Paper-ash. For this purpose, selected test variables were mixing ratio with two levels of mortar(1:2, 1:3), and 3 types of paper-ash(A, B, C), and paper-ash content with four levels(5%,, 10%, 15%, 20%). As a result of this study, in all mixes with partial replacement of fine aggregate by Paper-ash generally Produced Paper-ash mortar with decreased compressive strength at ail age as compared to ordinary mixes. The mixing rate 1:2 was the higher increasing rate of strength than the mixing rate 1:3. The flow value and unit weight of paper-ash mortar were decreased with increasing of the paper-ash content. And the thermal conductivity of the thermal conductivity of the paper-ash mortar was lower than normal mixing without paper-ash.

열차 제어의 연속 제동시 마찰특성과 온도분포

이시우(Lee Si-Woo),최경진(Choi Kyung-Jin) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

During barking at a train, thermal energy is generated due to the frictions between disk and lining and wheel and shoe. In general, the braking transfers the kinetic energy into thermal energy. Therefore, the frictional characteristics are varied according to the braking force, the thermal resistance, and the thermostable, etc. Using a Dynamo testing we have studied the fictional characteristics and the thermal distribution to investigate a stable speed and to improve the testing method through comparing and analysing in the measurement of the thermocouple temperature and infrared camera.

주행 중 발생하는 고속전철 집전계 신호의 특성

이시우(Si-Woo Lee),김정수(Jung-Soo Kim),조용현(Yong-Hyeon cho),최강윤(Kang-Youn Choe) 한국철도학회 2004 철도저널 Vol.7 No.3

The dynamic characteristics of the current collection process of the high-speed railway are investigated through signals acquired during a test run. The signals are obtained from accelerometers, load cells, and strain gauges attached to various positions of the pantograph, and they are processed in time-and frequency-domains to obtain the dynamic characteristics. The main natural frequency of the pantograph is found to be 8.5Hz. There also are components at low frequencies varying linearly with the train speed. The contact frequency components above 20Hz is attenuated as they pass through the secondary suspension. The main frequency component of the load cell signal is found to be related with the rolling motion of the panhead generated by the stagger in the catenary.